arXiv subjects

Ze-Hui Yan

Publications and source records attributed to Ze-Hui Yan.

2 recordsLinked to original sources

arXiv2018

Analysis of the scalar, axialvector, vector, tensor doubly charmed tetraquark states with QCD sum rules

In this article, we construct the axialvector-diquark-axialvector-antidiquark type currents to interpolate the scalar, axialvector, vector, tensor doubly charmed tetraquark states, and study them with QCD sum rules systematically by carrying out the operator product expansion up to the vacuum condensates of dimension 10 in a consistent way, the predicted masses can be confronted to the experimental data in the future. We can search for those doubly charmed tetraquark states in the Okubo-Zweig-Iizuka super-allowed strong decays to the charmed meson pairs.

hep-ph↗

arXiv2017

Revisit assignments of the new excited $Ω_c$ states with QCD sum rules

In this article, we distinguish the contributions of the positive parity and negative parity $Ω_c$ states, study the masses and pole residues of the 1S, 1P, 2S and 2P $Ω_c$ states with the spin $J=\frac{1}{2}$ and $\frac{3}{2}$ using the QCD sum rules in a consistent way, and revisit the assignments of the new narrow excited $Ω_c^0$ states. The predictions support assigning the $Ω_c(3000)$ to be the 1P $Ω_c$ state with $J^P={\frac{1}{2}}^-$, assigning the $Ω_c(3090)$ to be the 1P $Ω_c$ state with $J^P={\frac{3}{2}}^-$ or the 2S $Ω_c$ state with $J^P={\frac{1}{2}}^+$, and assigning $Ω_c(3119)$ to be the 2S $Ω_c$ state with $J^P={\frac{3}{2}}^+$.

hep-ph↗